SFTP.
For non-technical partners, we have a simple instructional document on how to download and use Filezilla[1] to connect. We haven't had many challenges.
For non-technical partners, we have a simple instructional document on how to download and use Filezilla[1] to connect. We haven't had many challenges.
It's probably the least janky solution I've come across in a land of janky and insecure.